Re: [RFC PATCH 0/3] ARM: uncompress.h multi-platform enablement

[Tim Bird <tim.bird-mEdOJwZ7QcZBDgjK7y7TUQ@public.gmane.org>]

On 09/26/2012 07:17 AM, Arnd Bergmann wrote:
> On Wednesday 26 September 2012, Tim Bird wrote:
>> Will those of us not interested in a single kernel binary
>> that works everywhere be able to configure an ARM kernel image
>> without a lot of bloat?
> 
> I'm not aware of increase in code size from the single kernel
> image yet. If you find something, let us know.

I have been assuming that the device tree conversion
added a small overhead to both the kernel size and
the boot time.  You are correct that I should measure
this before complaining. :-)  I'll try to do that when
I have some time.  Unfortunately, before and after
size snapshots are a little difficult to obtain --
it appears that support for device tree involves other
refactoring.

My main issue is to avoid requiring the loading of
drivers and features that are not required for a
platform, if the platform does not need it (or the
developer chooses to omit it).  I may have mis-read
this thread, but it sounded like the uncompress
code was going to be moved to a common area and
not be configurable.

Sorry if this is not the case.
 -- Tim

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Tim Bird
Architecture Group Chair, CE Workgroup of the Linux Foundation
Senior Staff Engineer, Sony Network Entertainment
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